No, TThread is either heavy or middle-weight, according to the
definitions at
http://whatis.techtarget.com/definition/0,,sid9_gci814910,00.html
Of course it would be possible to include a multitasking scheduler in
the RTL to avoid any system calls and share any resources. (AFAIK, for
Linux there somewhere was an alternate PThread library that does exactly
in order to avoid slight Posix incompatibilities caused by "Linux
Threads". But same is not necessary any more as the OS-based NPTL is
said to perform just as good and Posix-compatible.)
I.e. if using Linux with NPTL (or that old special PThread library), I
don't see how you could use "lighter" threads than with TThread.
If using Windows, (with it's quite heavy native Threads), pure user mode
threads might be a lot "lighter". I do suppose that there are (C based)
libraries that could be used here.
Anyway, the target for "lighter" threads is not really TThread itself,
but the underlying scheduler.
-Michael
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